CVE-2021-40532 json
Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.
published 2021-09-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27707
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.
Patch / fix
Exploit prediction
1.25% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
github.com
/morethanwords/tweb/commit/f224e459c36eb96b2cf9dba559a48b1f08d23330
patch, third-party-advisory
Sources
- CVE List CVE-2021-40532
- NVD CVE-2021-40532
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.